Compile

File → Open → Navigate to the folder where you placed the QGroundControl source → Open the file'qgroundcontrol.pro‘. Then hit the green play button on the bottom left.

The code will take a few hours to compile. In my case, the compilation took approximately 6 hours to complete. Once compiled, run the program and connected to our ArduPilot can take up to 5 minutes to synchronize with QGroundControl. While it is true that our Raspberry Pi processor will reach its peak in processor usage, once it is fully synchronized with ArduPilot have some fluency in the program at the time of display readings.